■ put-side pain■ call-side painTotal payout option writers would owe at each settle price (both sides, all open interest, ×100 shares) — low settles hurt put writers, high settles hurt call writers. The minimum — 200 — is the max pain price.
Open interest by strike · Fri, Jul 31
■ calls (up)■ puts (down)NVDA open contracts per strike for Fri, Jul 31.
Open-interest change — building vs unwinding
Needs two observed snapshot days for this expiration — the comparison appears automatically once the next weekday snapshot lands. We diff real observations only; nothing is estimated.
Volume by strike · Fri, Jul 31
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Jul 31
— call IV— put IVATM ≈ 50.5% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Jul 31
Net dealer gamma per strike, in dollars per 1% move, assuming the standard convention (dealers long calls, short puts) — an assumption, not an observation. Above the amber flip level hedging tends to dampen moves; below it, to amplify them.
Greeks by strike · Fri, Jul 31
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.95
-0.14
180
0.0092
0.02
-0.15
-0.05
0.93
-0.20
182.5
0.0129
0.02
-0.20
-0.07
0.90
-0.27
185
0.0180
0.03
-0.27
-0.10
0.85
-0.37
187.5
0.0242
0.04
-0.37
-0.15
0.78
-0.48
190
0.0311
0.05
-0.48
-0.22
0.70
-0.57
192.5
0.0375
0.06
-0.58
-0.30
0.60
-0.64
195
0.0421
0.07
-0.65
-0.41
0.49
-0.66
197.5
0.0438
0.07
-0.66
-0.51
0.38
-0.61
200
0.0422
0.07
-0.62
-0.62
0.28
-0.53
202.5
0.0377
0.06
-0.53
-0.72
0.20
-0.41
205
0.0311
0.05
-0.41
-0.81
0.13
-0.30
207.5
0.0239
0.04
-0.30
-0.87
0.09
-0.21
210
0.0173
0.03
-0.20
-0.92
0.06
-0.14
212.5
0.0121
0.02
-0.13
-0.95
0.04
-0.09
215
0.0083
0.01
-0.09
-0.97
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 43 are in the CSV. Δ per $1 of underlying · Θ per day · vega per IV point.
Stacked — layer the expirations
Call open interest per strike, stacked across the checked expirations — each color is one expiry. Strikes are pruned to the liquid center of each chain.
Max pain history
History starts accruing now: first snapshot taken 2026-07-28. We chart only days we actually observed — check back as the record builds. The measured hit-rate across all tickers lives on the accuracy ledger.
Max pain is arithmetic, not prophecy: the settle price that would minimize what option writers pay out at expiration, computed from open interest alone. Prices sometimes gravitate toward heavy strikes into expiry — dealer hedging is a real flow — but the evidence that max pain predicts settlement better than chance is mixed, and we are not going to pretend otherwise. Use it as a map of where positioning is stacked, next to the fundamentals and the earnings calendar, not as a target.
Data: Cboe delayed public feed (~15 minutes), refreshed here about every 15 minutes. Open interest itself updates once daily, before the open. Educational information, not investment advice.